//$stored_moods will be an array containing all values of the meta key 'mood'$stored_moods = get_post_meta( $post_id, 'mood' );//$stored_listening_to will be the first value of the key 'listening_to'$stored_listening_to = get_post_meta( $post_id, 'listening_to', 'true' );

//Now we need a nice ouput format, so that //the user can implement it how he/she wants: //ie. echo mood_music( $post->ID, 'get' );